EP1588804B1 - Verbrennungskraftbetriebenes Werkzeug - Google Patents

Verbrennungskraftbetriebenes Werkzeug Download PDF

Info

Publication number
EP1588804B1
EP1588804B1 EP05252430A EP05252430A EP1588804B1 EP 1588804 B1 EP1588804 B1 EP 1588804B1 EP 05252430 A EP05252430 A EP 05252430A EP 05252430 A EP05252430 A EP 05252430A EP 1588804 B1 EP1588804 B1 EP 1588804B1
Authority
EP
European Patent Office
Prior art keywords
combustion
motor
motor holder
power tool
type power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05252430A
Other languages
English (en)
French (fr)
Other versions
EP1588804A2 (de
EP1588804A3 (de
Inventor
Yoshitaka c/o Hitachi Koki Co. Ltd. Akiba
Tomomasa c/o Hitachi Koki Co. Ltd. Nishikawa
Kunio c/o Hitachi Koki Co. Ltd. Yamamoto
Shinki c/o Hitachi Koki Co. Ltd. Ohtsu
Haruhisa c/o Hitachi Koki Co. Ltd. Fujisawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to EP20090002589 priority Critical patent/EP2070657A3/de
Publication of EP1588804A2 publication Critical patent/EP1588804A2/de
Publication of EP1588804A3 publication Critical patent/EP1588804A3/de
Application granted granted Critical
Publication of EP1588804B1 publication Critical patent/EP1588804B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure

Definitions

  • the present invention relates generally to a combustion-type power tool, such as combustion-type nail driver for striking fastening members such as nails or studs into a workpiece wherein acceleration applied to a motor when combustion explosion occurs or a piston impinges upon a bumper is suppressed.
  • a combustion-type power tool such as combustion-type nail driver for striking fastening members such as nails or studs into a workpiece wherein acceleration applied to a motor when combustion explosion occurs or a piston impinges upon a bumper is suppressed.
  • a combustion-type nail driver ignites air-fuel mixed gas confined in a combustion chamber and translates voluminal expansion of the gas into power.
  • a fan is disposed within the combustion chamber to stir air and fuel to enhance the combustion property of the mixed gas.
  • the fan is rotated by a motor.
  • the fan generates turbulence of the mixed gas in the combustion chamber and promotes combustion of the gas.
  • Occurrence of explosive combustion in the combustion chamber brings the voluminal expansion of the gas and generates impact. The impact thus generated is transmitted to the body of the nail driver, and so to the motor for rotating the fan.
  • a piston that translates the voluminal expansion of the gas into power strikes a nail into a workpiece.
  • a kinetic energy in excess of the energy required for striking the nail into the workpiece is absorbed into a bumper disposed in the cylinder along which the piston slidingly moves when the piston impinges upon the bumper.
  • acceleration generated when the piston impinges upon the bumper is applied to the body of the nail driver, and the acceleration thus generates is transmitted to the motor.
  • the motor is a precise device and is week against vibration.
  • the motor may be damaged by the impact repeatedly applied to the motor, resulting in degradation of the property of the motor.
  • a buffer material is used for a motor holding member.
  • the motor holding member separates the motor from the body of the nail driver, thus transmission of the impact to the motor can be prevented, as disclosed in U.S. Patent No. 6,520,397 .
  • a motor 118 is mounted on a cylinder head 111.
  • the cylinder head 111 is disposed at one end portion of a housing 102 of the nail driver 101 and covered by a head cover 103.
  • a fan 119 is attached to the tip end of the output shaft 118b of the motor 118.
  • a spark plug 112 fixedly secured to the cylinder head 111 is positioned in the vicinity of the motor 118 and has one end projected into the combustion chamber.
  • Two circumferentially extending grooves are formed over the entire outer periphery of the motor 118 to be spaced apart in the axial direction of the motor 118. As shown in Fig. 1 , a retaining ring 114 is fitted into each of the two grooves. An inner ring 113a of a buffer member 113 is interposed and held between the two retaining rings 114.
  • the buffer member 113 includes the inner ring 113a, a fixing metal member 113c, and a rubber member 113b molded and coupled to both the inner ring 113a and the fixing metal member 113c to be integral thererwith.
  • the fixing metal member 113c is fixedly secured to the cylinder head 111.
  • the motor 118 is supported on the cylinder head 111 via the buffer member 113.
  • the buffer member 113 is an integral member in which the two metal rings 113a and 113c are connected together with the rubber member 113b interposed therebetween. Due to the different materials forming the integrated buffer member 113, reliability of rubber mold coupling is low and there is a possibility that the different material segments are separated if the rubber molding condition is not good.
  • the spark plug 112 is positioned in the vicinity of the motor. Accordingly, the buffer member 113 cannot extend to the position of the spark plug 112. Continuity of the buffer member 113 is thus interrupted by the spark plug 112 and the buffer member 113 is separated at the position of the spark plug 112. The buffer member 113 is incapable of equally suppressing the impact to be imparted upon the motor 118. Tensile stress is thus focused on a position near the spark plug securing position, so that the rubber member 113b is liable to be damaged.
  • Another object of the present invention is to provide a combustion-type power tool that is inexpensive in cost and has a motor supporting structure of an improved cooling efficiency.
  • a coil spring is preferably used as the elastic member and has one end secured to the motor holder and another end secured to the motor holder receiving portion.
  • the motor holder has an outer surface formed with a plurality of protrusions for firmly holding the motor.
  • a heat shielding member is disposed in the motor holder and in a position between the body of the motor and the combustion chamber for preventing heated gas generated at the time of combustion from entering into the motor and for prolonging the service life of the motor.
  • a disc or discs is preferably used as the heat shielding member.
  • a low frictional member is interposed between an inner surface of the motor holder receiving portion and an outer surface of the motor holder, wherein the low frictional member has a friction factor lower than a friction factor of the cylinder head.
  • the motor holder is formed from a metal for dissipating heat.
  • the motor holder may further be formed with a cooling fin.
  • a combustion-type power tool will be described with reference to Figs. 3 through 7 .
  • the embodiment pertains to a combustion-type nail driver.
  • the terms “upper”, “lower”, “above”, “below”, “upward”, “downward” and the like will be used assuming that the combustion-type nail driver is disposed in an orientation in which a nail is fired vertically downward.
  • the combustion-type nail driver 1 shown in Fig. 3 has a housing 2 constituting an outer frame.
  • a head cover 3 formed with an intake port 3a is mounted on the top of the housing 2.
  • a handle 4 extends from one side of the housing 2.
  • the handle 4 has a trigger switch 5 and detachably accommodates therein a battery pack 4a.
  • the combustion-type nail driver 1 also has a canister housing 29 at one side of the housing 2 from which the handle 4 extends.
  • a gas canister 30 containing therein a combustible liquidized gas is detachably installable in the canister housing 29.
  • a magazine 6 accommodating therein a bundle of nails (not shown) is disposed below the handle 4.
  • a nose 7 extends from near the lower end of the housing 2.
  • the nose 7 is integral with a cylinder 20 described later and has a tip end abuttable on a workpiece 28.
  • the nose 7 is adapted for guiding sliding movement of a driver blade 23a described later and for guiding the nail driven into the workpiece 28.
  • a push lever 9 is reciprocally slidingly movably supported to the nose 7, and projects from the tip end 7a of the nose 7.
  • the push lever 9 has an upper end abuttingly associated with an arm section 8 fixed to a combustion-chamber frame 10 described later.
  • a compression coil spring 22 serving as a biasing member is interposed between the arm section 8 and the cylinder 20.
  • a cylinder head 11 is fixedly secured to the top of the housing 2 and substantially covers the open top end of the housing 2. As shown in Fig. 5 , a motor 18 is disposed at one side of the cylinder head 11 opposite the combustion chamber 26 as will be described later. An ignition plug 12 is disposed in the vicinity of the motor 18 and the ignition position is directed toward the combustion chamber 26.
  • a motor holder 13 serving as a motor accommodating member is in the form of a hollow cylinder made from resin such as plastic.
  • the motor holder 13 has a hole through which lead lines of the motor 18 are drawn upward.
  • a motor holder receiving portion 11a is formed in the cylinder head 11 for receiving the motor holder 13.
  • the motor holder 13 is formed with a groove 13a at the lower inner periphery thereof adapted to receive an end portion of a coil spring 15 disposed in a gap formed in the axial direction between the motor holder 13 and the motor holder receiving portion 11a.
  • the motor holder receiving portion 11a is also formed with a groove 11b at the lower inner periphery thereof to receive another end portion of the coil spring 15.
  • the motor 18 is inserted into the motor holder 13 from its lower end. Then, one end portion of the coil spring 15 is inserted into the groove 13a of the motor holder 13 and the other end portion into the groove 11b of the motor holder receiving portion 11a. As shown in Fig. 7 , the other end portion of the coil spring 15 inserted into the groove 11b of the motor holder receiving portion 11a is fixedly held by a screw 32.
  • the coil spring 15 interposed between the motor 18 and the cylinder head 11 serves to suppress the initial acceleration which may be imparted upon the motor 18.
  • the motor holder receiving portion 11a has a dimension such that the inner diameter thereof is slightly larger than the outer diameter of the motor holder 13, thereby allowing the motor holder 13 to slidingly move along the inner periphery of the motor holder receiving portion 11a. Impact generated at the time of firing the nails is imparted upon the motor holder 13 to move the latter back and forth. However, due to friction between the outer periphery of the motor holder 13 and the inner periphery of the motor holder receiving portion 11a, little impact is received at the motor 18.
  • a heat shielding member (14) is disposed in the motor holder 13 and in a position between the body of the motor 18 and the combustion chamber 10. More specifically, the heat shielding member (14) comprises two disks (14a, 14b) formed with a center hole into which the output shaft 18b of the motor 18 is fitted. The member 14 is disposed at a position remote from the end portion of the output shaft 18b to which the fan 19 is attached. The member 14 prevents heat wind generated in the combustion chamber 26 from entering into the motor 18 through a gap between the cylinder head 11 and the motor output shaft 18b.
  • a switch 33 is provided in the housing 2 for detecting an uppermost stroke end position of the combustion-chamber frame 10 described later when the nail driver 1 is pressed against the workpiece 28.
  • the switch 33 can be turned ON when the push lever 9 is elevated to a predetermined position for starting rotation of the motor 18.
  • the cylinder head 11 has a handle side in which is formed a fuel ejection passage 25 which allows a combustible gas to pass therethrough.
  • a fuel ejection passage 25 which allows a combustible gas to pass therethrough.
  • One end of the ejection passage 25 opens at the lower surface of the cylinder head 11.
  • Another end of the ejection passage 25 serves as a gas canister connecting portion 25a in communication with a gas canister 30.
  • the combustion-chamber frame 10 is provided in the housing 2 and is movable in the lengthwise direction of the housing 2.
  • the uppermost end of the combustion-chamber frame 10 is abuttable on the lower surface of the cylinder head 11.
  • a combustion chamber includes a chamber 10a and a chamber head 10b connected integrally using a bolt (not shown). Since the arm section 8 is connected to the combustion-chamber frame 10, the combustion-chamber frame 10 is moved in accordance with the movement of the push lever 9.
  • the cylinder 20 is fixed to the housing 2.
  • An outer peripheral surface of the cylinder 20 is in sliding contact with the inner circumference of the combustion-chamber frame 10 for guiding the movement of the combustion-chamber frame 10.
  • the cylinder 20 has an axially intermediate portion formed with an exhaust hole 21.
  • An exhaust-gas check valve (not shown) is provided to selectively close the exhaust hole 21.
  • a piston 23 is slidably and reciprocally movably provided in the cylinder 20.
  • the piston 23 divides an inner space of the cylinder 20 into an upper space above the piston 23 and a lower space below the piston 23.
  • the driver blade 23a extends downwards from the lower surface of the piston 23 to the nose 7, so that the tip end of the driver blade 23a can strike against the nail (not shown).
  • a bumper 24 made from an elastic material such as rubber is disposed at a lower side of the cylinder 20. The piston 23 strikes against the bumper 24 when the piston 23 is moved downward toward a bottom dead center.
  • the housing 2 has a lower portion formed with an exhaust port 2a.
  • the first and second flow passages allow a combustion gas and a fresh air to pass along the outer peripheral surface of the cylinder 20 for discharging these gases through the exhaust port 2a of the housing 2. Further, the above-described intake port is formed for supplying a fresh air into the combustion chamber 26, and the exhaust hole 21 discharges combustion gas generated in the combustion chamber 26.
  • a fan 19 is attached to the lower end of the motor output shaft 18b with two nuts.
  • the fan 19 is disposed in the combustion chamber 26. Rotation of the fan 19 performs the following three functions. First, the fan 19 stirs and mixes the air with the combustible gas as long as the combustion-chamber frame 10 remains in abutment with the cylinder head 11. Second, after the mixed gas has been ignited, the fan 19 causes turbulence of the air-fuel mixture, thus promoting the turbulent combustion of the air-fuel mixture in the combustion chamber 26.
  • the fan 19 performs scavenging such that the exhaust gas in the combustion chamber 26 can be scavenged therefrom and also performs cooling of the cylinder 20 when the combustion-chamber frame 10 moves away from the cylinder head 11 and when the first and second flow passages are provided.
  • the push lever 9 In the non-operational state of the combustion-type nail driver 1, the push lever 9 is biased downward by the biasing force of the compression coil spring 22, so that the push lever 9 protrudes from the lower end of the nose 7.
  • the uppermost end of the combustion-chamber frame 10 is spaced away from the cylinder head 11 because the combustion-chamber frame 10 is in association with the push lever 9 through the arm section 8.
  • a part of the combustion-chamber frame 10 which part defines the combustion chamber 26 is also spaced apart from the top portion of the cylinder 20.
  • the first and second flow passages are provided. In this condition, the piston 23 stays at the top dead center in the cylinder 20.
  • the gas canister 30 is tilted toward the cylinder head 11.
  • the injection rod 30a of the gas canister 30 is pressed against a gas canister connecting portion 25a of the cylinder head 11. Therefore, the liquidized combustible gas in the gas canister 30 is ejected once from the ejection port of the fuel ejection passage 25 into the combustion chamber 26.
  • the combustion-chamber frame 10 reaches the uppermost stroke end whereupon the switch 33 is turned ON to supply electric power to the motor 18 and start rotation of the fan 19.
  • the piston 23 strikes against the bumper 24, and the combustion gas is discharged out of the cylinder 20 through the exhaust hole 21 of the cylinder 20.
  • a check valve (not shown) is provided at the exhaust hole 21. When the inner space of the cylinder 20 and the combustion chamber 26 becomes the atmospheric pressure, the check valve is closed.
  • Impact is imparted upon the fan 19 when the air-fuel mixed gas is ignited.
  • the motor 18 connected to the fan 19 is applied with resultant acceleration. Striking the piston 23 against the bumper 24 consumes kinetic energy of the piston 23 in excess of energy necessary for driving the nail. Acceleration resulting from the excessive energy is applied to the nail driver 1 including the motor 18.
  • the motor 18 is mounted on the cylinder head 11 and is held thereon with only the elastically deformable spring 15. Therefore, although large acceleration is applied to the motor 18, expansion and compression behavior of the spring 15 absorb the energy to be applied to the motor 18. Thus, impact imparted upon the motor 18 is greatly reduced. Surface contact of the outer peripheral surface of the motor holder 13 with the inner wall of the motor holder receiving portion 11a suppresses transmission of the impact to the motor 18.
  • Combustion gas still remaining in the cylinder 20 and the combustion chamber 26 has a high temperature at a phase immediately after the combustion.
  • the heat is absorbed through the inner surfaces of the cylinder 20 and the combustion-chamber frame 10, and the temperature of these components is also increased. However, the absorbed heat is released to the atmosphere through the outer surfaces of the cylinder 20 and the combustion-chamber frame 10.
  • the trigger switch 5 is turned OFF, and the user lifts the nail driver 1 until the push lever 9 is separated from the workpiece 28.
  • the push lever 9 and the combustion-chamber frame 10 move downward due to the biasing force of the compression coil spring 22.
  • the fan 19 keeps rotating for a predetermined period of time in spite of OFF state of the trigger switch 5 because of an operation of a control portion (not shown).
  • the first and second flow passages are provided at the upper side of the combustion-chamber frame 10, so that fresh air flows into the combustion chamber 26 through the intake port 3a formed in the head cover 3 and the residual gas is expelled through the exhaust port 2a by the rotation of the fan 19.
  • the combustion chamber 26 is scavenged.
  • the rotation of the fan 19 is stopped to restore an initial stationary state. Thereafter, subsequent nail driving operation can be performed by repeating the above described operation process.
  • the coil spring 15 according to the above-described embodiment is covered with an elastic material such as rubber. Due to impact absorbing capability of the rubber, the impact imparted upon the motor can be attenuated or reduced without relying on the friction between the motor holder 13 and the motor holder receiving portion 11a.
  • the coil spring 15 may have an increasing diameter toward the lower portion of the same. The use of such a coil spring 15 enables the vertical distance between the motor holder 13 and the bottom portion of the motor holder receiving portion 11a to be shortened, thereby compacting the size of the nail driver 1.
  • a sleeve formed from resin such as plastic may be interposed between the inner peripheral surface of the motor holder receiving portion 11a and the outer peripheral surface of the motor holder 13 in order to attain sliding movement between the sleeve and the motor holder 13.
  • the material of the sleeve is selected from low frictional materials.
  • FIG. 8 is a vertical cross-sectional view showing the motor holder 13 and its associated components.
  • a motor 18 is accommodated in the motor holder 13 formed from a material of a low friction factor such as plastic.
  • the motor holder 13 is a hollow cylindrical member adapted to receive the motor 18.
  • the motor 18 is supported by the motor holder 13 and the upper side of the motor 18 is fixed by hooks 13b provided above the motor holder 13.
  • Three protrusions 13c protrude radially outwardly from the intermediate portion of the motor holder 13. The protrusions 13c are formed at the time of mold shaping the motor holder 13.
  • the protrusions 13c perform up and down movements while contacting the inner wall of the motor holder receiving portion 11a formed in the cylinder head 11 when impact is imparted upon the motor 18. Friction between the protrusions 13c and the motor holder receiving portion 11a momentarily substantially absorbs the impact to be imparted upon the motor 18.
  • a groove 13d is formed in the bottom of the motor holder 13, to which the upper end portion of the coil spring 15 is attached.
  • the lower end portion of the coil spring 15 is attached to the groove 11b formed in the bottom of the motor holder receiving portion 11a.
  • the coil spring 15 interposed between the motor 18 and the cylinder head 11 serves to suppress the initial acceleration applied to the motor 18.
  • FIG. 9 is a vertical cross-sectional view showing the motor holder and its associated components.
  • one end of the coil spring 15 is force-fitted into the groove 11b formed in the motor holder receiving portion formed in the cylinder head 11, thereby supporting the motor holder 13 on the cylinder head 11.
  • machining the cylinder head 11 can be achieved easily because the shape of the groove 11b formed in the cylinder head 11 does not require a complicated spring capturing capability.
  • FIG. 10 is a vertical cross-sectional view showing the motor holder and its associated components.
  • the fourth embodiment shows how to hold the coil spring 15 in the motor holder receiving portion 11a.
  • An annular end holding part 11d is formed in the upper end of the motor holder receiving portion 11a for holding a sleeve 31.
  • the sleeve 31 has an outer diameter approximately equal to the inner diameter of the motor holder receiving portion 11a. The sleeve 31 inserted into the motor holder receiving portion 11a holds the coil spring 15 in the motor holder receiving portion 11a.
  • assembling of the motor 18 and its associated components can be performed easily because insertion of the sleeve 31 into the motor holder receiving portion 11a enables holding of the coil spring 15. Further, by changing the material of the sleeve 31, friction between the sleeve 31 and the motor holder 13 can be adjusted.
  • FIG. 11 through 14 A combustion-type nail driver according to the fifth embodiment will be described while referring to Figs. 11 through 14 .
  • the nail driver shown in Figs. 11 through 14 is basically the same in structure as that shown in Figs. 3 through 7 but differs therefrom in the material and shape of the motor holder 13.
  • the motor holder 13 is formed from a metal such as aluminum.
  • the metallic motor holder 13 is imposed on a role of dissipating combustion heat generated at the time firing the nails and also heat generated from the motor 18.
  • the motor 18 is inserted from the upper end of the motor holder 13 and held therein with a pin 49 so as not to be detached therefrom.
  • One end of the coil spring 15 is inserted into and held by the groove 13a formed in the bottom of the motor holder 13.
  • Another end of the coil spring 15 is inserted into the groove 11b engraved in the motor holder receiving portion 11a and is fixed thereto by a screw 32.
  • Fig. 11 shows an initial state of the nail driver 1, in which the nail driver 1 has not yet been operated.
  • Air flow or combustion gas flow is created by the fan 19 at the time of scavenging. Air is introduced into the intake port 3a from the upper side of the head cover 3, flows along the first flow passage 41, and then enters into the combustion chamber 26 via the fan 19. Combustion gas remaining in the combustion chamber 26 is expelled out of the combustion chamber 26, passes along the second flow passage 42, flows in the outer periphery of the cylinder 20, and discharged out of the housing 2 from the exhaust port 2a formed in the lower portion of the housing 2.
  • the motor 18 for rotating the fan 19 is accommodated in the motor holder 13 made from a metal such as aluminum.
  • the motor holder 13 and the motor holder receiving portion 11a formed in the cylinder head 11 are connected together with an elastically deformable coil spring 15 interposed therebetween.
  • the coil spring 15 serves to prevent impact generated at the time of firing the nails from being directly transmitted to the motor 18.
  • the metallic motor holder 13 effectively dissipates heat generated at the time of operation of the nail driver and heat generated from the motor 18, thereby suppressing the temperature rise of the motor 18. Further, cooling fins 13e are formed in the outer circumference of the motor holder 13 for enhancing the heat dissipation.
  • Fig. 12 is a cross-sectional view showing the upper portion of the nail driver 1 as view from a direction in which the nail driver 1 is rotated 90 degrees about the motor output shaft from the state shown in Fig. 11 .
  • a head protector 44 is provided inside the head cover 3.
  • Fig. 14 shows the head protector 44 as viewed from direction D shown in Fig. 12 .
  • the head protector 44 is substantially cone-shaped and formed from plastic.
  • the head protector 44 includes a communication part 44c and a guide part 44b.
  • a plurality of scavenging holes 44a is formed in the communication part 44c for allowing air to pass therethrough at the time of scavenging.
  • the guide part 44b is such a portion where no scavenging holes 44a are formed.
  • the air flow at the time of scavenging is that the air sucked from the intake port 3a passes by the cooling fins 13e formed in the upper portion of the motor holder 13, guided by the guide part 44b where no scavenging holes 44a are formed, and then introduced into the combustion chamber 26.
  • the fresh air passes by the upper portion of the motor holder 13, whereby the temperature rise of the motor 18 can further be suppressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (12)

  1. Verbrennungskraftbetriebenes Werkzeug, umfassend:
    ein Gehäuse (2);
    einen Zylinderkopf (11), welcher an einem Ende des Gehäuses (2) angeordnet ist;
    einen Zylinder (20), welcher in dem Gehäuse (2) angeordnet ist;
    einen gleitbar in dem Zylinder (20) angeordneten Kolben (23), wobei der Kolben (23) den Zylinder (20) in einen oberen Zylinderraum oberhalb des Kolbens (23) und einen unteren Zylinderraum unterhalb des Kolbens (23) unterteilt;
    eine mit dem Kolben (23) verbundene Eintreibklinge (23a);
    eine in dem Gehäuse (2) vorgesehene Verbrennungskammer (26);
    ein in der Verbrennungskammer (26) angeordnetes Gebläse (19);
    einen Motor (18), welcher eine Ausgangswelle (18b) aufweist, die mit dem Gebläse (19) gekuppelt ist,
    gekennzeichnet durch einen Motorhalter (13), welcher den Motor (18) und den Zylinderkopf (11) aufnimmt, welcher mit einem Motorhalteraufnahmeabschnitt (11a) versehen ist, in welchem der Motorhalter (13) gleitbar beweglich angeordnet ist, und einem elastischen Bauteil (15), welcher in einem in der axialen Richtung zwischen dem Motorhalter (13) und dem Motorhalteraufnahmeabschnitt (11a) ausgebildeten Spalt angeordnet ist, wobei der elastische Bauteil (15) elastisch verformbar ist, wenn der Motorhalter (13) sich gleitend relativ zu dem Motorhalteraufnahmeabschnitt (11a) bewegt.
  2. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, wobei der elastische Bauteil eine Schraubenfeder (15) umfasst, deren eines Ende an dem Motorhalter (13) und deren anderes Ende an dem Motorhalteraufnahmeabschnitt (11a) befestigt ist.
  3. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 2, ferner umfassend einen Befestigungsteil (31, 32), welche genanntes andere Ende der Schraubenfeder (15) fest an dem Motorhalteraufnahmeabschnitt (11a) befestigt.
  4. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 3, wobei der Befestigungsteil eine Schraube (32) umfasst.
  5. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 3, wobei der Befestigungsteil eine Hülse (31) umfasst, welche zwischen dem Motorhalter (13) und dem Motorhalteraufnahmeabschnitt (11a) angeordnet ist, wobei die Hülse (31) eine Endfläche (31 a) aufweist, welche genanntes anderes Ende der Schraubenfeder (15) gegen den Motorhalteraufnahmeabschnitt (11a) drückt.
  6. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, wobei der Motorhalter (13) eine Außenfläche aufweist, welche mit einer Vielzahl von Vorsprüngen (13c) ausgebildet ist.
  7. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, ferner umfassend einen Wärmeabschirmteil (14), der in dem Motorhalter (13) und in einer Position zwischen dem Gehäuse des Motors (18) und der Verbrennungskammer (26) angeordnet ist.
  8. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 7, wobei der Wärmeabschirmteil eine Scheibe (14) oder Scheiben (14a, 14b) umfasst, die mit einem Loch versehen sind, in welches die Ausgangswelle (18b) des Motors (18) eingesetzt ist.
  9. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, ferner umfassend einen Bauteil niedriger Reibung, welcher zwischen einer Innenfläche des Motorhalteraufnahmeabschnitts (11a) und einer Außenfläche des Motorhalters (13) angeordnet ist, wobei der Bauteil niedriger Reibung einen Reibungsfaktor niedriger als der Reibungsfaktor des Zylinderkopfes (11) aufweist.
  10. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, wobei der Motorhalter (13) aus einem Metall geformt ist.
  11. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, wobei der Motorhalter (13) mit einer Kühlrippe (13e) ausgebildet ist.
  12. Verbrennungskraftbetriebenes Werkzeug nach Anspruch 1, ferner umfassend einen Luftströmungsführungsteil (44), welcher oberhalb des Zylinderkopfs (11) angeordnet ist, um Frischluft zum Strömen längs einer Oberfläche des Zylinderkopfes (11) zu führen, welche dem Luftströmungsführungsteil (44) gegenüber liegt.
EP05252430A 2004-04-19 2005-04-19 Verbrennungskraftbetriebenes Werkzeug Active EP1588804B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20090002589 EP2070657A3 (de) 2004-04-19 2005-04-19 Verbrennungsmotorwerkzeug

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004123501 2004-04-19
JP2004123501 2004-04-19
JP2005043281 2005-02-18
JP2005043281A JP4353110B2 (ja) 2004-04-19 2005-02-18 燃焼式釘打機

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP20090002589 Division EP2070657A3 (de) 2004-04-19 2005-04-19 Verbrennungsmotorwerkzeug

Publications (3)

Publication Number Publication Date
EP1588804A2 EP1588804A2 (de) 2005-10-26
EP1588804A3 EP1588804A3 (de) 2006-07-12
EP1588804B1 true EP1588804B1 (de) 2009-04-01

Family

ID=34940905

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05252430A Active EP1588804B1 (de) 2004-04-19 2005-04-19 Verbrennungskraftbetriebenes Werkzeug
EP20090002589 Ceased EP2070657A3 (de) 2004-04-19 2005-04-19 Verbrennungsmotorwerkzeug

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20090002589 Ceased EP2070657A3 (de) 2004-04-19 2005-04-19 Verbrennungsmotorwerkzeug

Country Status (8)

Country Link
US (2) US7121442B2 (de)
EP (2) EP1588804B1 (de)
JP (1) JP4353110B2 (de)
AU (1) AU2005201643B2 (de)
CA (1) CA2503226C (de)
DE (1) DE602005013597D1 (de)
RU (1) RU2295435C2 (de)
TW (1) TWI279296B (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007202984C1 (en) * 2002-09-12 2011-06-30 Illinois Tool Works Inc. Fan motor suspension mount for a combustion-powered tool
JP4353110B2 (ja) * 2004-04-19 2009-10-28 日立工機株式会社 燃焼式釘打機
JP4608974B2 (ja) 2004-07-09 2011-01-12 日立工機株式会社 燃焼式釘打機
JP4534667B2 (ja) * 2004-08-24 2010-09-01 日立工機株式会社 燃焼式動力工具
JP4930670B2 (ja) * 2005-04-01 2012-05-16 マックス株式会社 ガス燃焼式打込み工具のモータ保持機構
EP1954448B1 (de) 2005-11-15 2012-01-04 Illinois Tool Works Inc. Einwegeventil für einen gebläsemotor eines brennkraftbetriebenen werkzeugs
JP4899840B2 (ja) * 2006-12-05 2012-03-21 マックス株式会社 ガス燃焼式打込み工具
JP2008183682A (ja) * 2007-01-31 2008-08-14 Hitachi Koki Co Ltd 燃焼式釘打機
JP5070876B2 (ja) * 2007-02-15 2012-11-14 マックス株式会社 ガス燃焼式打込み工具
JP5133000B2 (ja) * 2007-06-28 2013-01-30 株式会社マキタ 電動打ち込み工具
JP5070957B2 (ja) 2007-06-29 2012-11-14 マックス株式会社 ガス燃焼式打込み工具
JP2009006451A (ja) 2007-06-29 2009-01-15 Max Co Ltd ガス燃焼式打込み工具
JP4945359B2 (ja) 2007-07-26 2012-06-06 株式会社マキタ 燃焼式打ち込み工具
JP5122203B2 (ja) * 2007-07-26 2013-01-16 株式会社マキタ 燃焼式打ち込み工具
JP5125311B2 (ja) * 2007-08-21 2013-01-23 日立工機株式会社 燃焼式打込機
US20090206121A1 (en) * 2008-02-14 2009-08-20 Araiza Frank L Power adjustable fastener propelling tool
JP5286945B2 (ja) * 2008-05-30 2013-09-11 日立工機株式会社 燃焼式釘打機
TW201013055A (en) * 2008-09-26 2010-04-01 Basso Ind Corp Motor fan device with shock-absorbing function
JP5215890B2 (ja) * 2009-01-28 2013-06-19 佐鳥エス・テック株式会社 トリガースイッチ
TW201034804A (en) * 2009-03-20 2010-10-01 Basso Ind Corp Gas gun suspension and shock-absorbing system
US8490516B2 (en) 2009-09-30 2013-07-23 Hitachi Koki Co., Ltd. Screw driving machine having combustion-type power mechanism and electric power mechanism
JP5403351B2 (ja) * 2009-09-30 2014-01-29 日立工機株式会社 打込機
US8397969B2 (en) * 2010-02-12 2013-03-19 Nitroset, Llc Apparatus for installing explosively driven fasteners and fasteners for use therewith
US20110198383A1 (en) * 2010-02-12 2011-08-18 Fernando Masas Apparatus for installing explosively driven fasteners and fasteners for use therewith
JP5360691B2 (ja) * 2010-03-18 2013-12-04 日立工機株式会社 燃焼式釘打機
JP5648528B2 (ja) * 2011-02-22 2015-01-07 マックス株式会社 ガス燃焼式打込み工具
TWI451947B (zh) * 2013-06-18 2014-09-11 Basso Ind Corp Gas guns for gas cylinders
US9662777B2 (en) 2013-08-22 2017-05-30 Techtronic Power Tools Technology Limited Pneumatic fastener driver
CN103802070A (zh) * 2014-03-13 2014-05-21 朱益民 燃气钉枪
EP3184251A1 (de) * 2015-12-22 2017-06-28 HILTI Aktiengesellschaft Brennkraftbetriebenes setzgerät und verfahren zum betreiben eines derartigen setzgeräts
EP3184247A1 (de) * 2015-12-22 2017-06-28 HILTI Aktiengesellschaft Brennkraftbetriebenes setzgerät und verfahren zum betreiben eines derartigen setzgeräts
EP3184252A1 (de) * 2015-12-22 2017-06-28 HILTI Aktiengesellschaft Brennkraftbetriebenes setzgerät und verfahren zum betreiben eines derartigen setzgeräts
EP3184248A1 (de) 2015-12-22 2017-06-28 HILTI Aktiengesellschaft Brennkraftbetriebenes setzgerät und verfahren zum betreiben eines derartigen setzgeräts

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483474A (en) * 1981-01-22 1984-11-20 Signode Corporation Combustion gas-powered fastener driving tool
US5197646A (en) * 1992-03-09 1993-03-30 Illinois Tool Works Inc. Combustion-powered tool assembly
JP3435182B2 (ja) * 1993-01-20 2003-08-11 株式会社日立製作所 小型電動機及びそれを用いた送風機
FR2730443B1 (fr) * 1995-02-15 1997-04-11 Spit Soc Prospect Inv Techn Appareil de scellement a piston propulse par gaz comprime
US5713313A (en) * 1997-02-07 1998-02-03 Illinois Tool Works Inc. Combustion powered tool with dual fans
US6045112A (en) * 1997-08-20 2000-04-04 Calsonic North America, Inc. Vibration isolation system for an electric motor
US6520397B1 (en) * 1997-12-22 2003-02-18 Illinois Tool Works Inc. Combustion powered tool with improved combustion chamber fan motor suspension
US6262504B1 (en) * 1999-02-10 2001-07-17 Siemens Canada Limited HVAC motor and cover structure
US6619527B1 (en) * 2000-10-10 2003-09-16 Illinois Tool Works Inc. Combustion powered tool suspension for iron core fan motor
JP3818234B2 (ja) * 2002-07-19 2006-09-06 日立工機株式会社 釘打機
US7040520B2 (en) * 2002-09-12 2006-05-09 Illinois Tool Works Inc. Fan motor suspension mount for a combustion-powered tool
US7152695B2 (en) * 2002-09-20 2006-12-26 Snap-On Incorporated Power tool with air seal and vibration dampener
US6755159B1 (en) * 2003-01-20 2004-06-29 Illinois Tool Works Inc. Valve mechanisms for elongated combustion chambers
JP4665432B2 (ja) * 2003-06-20 2011-04-06 日立工機株式会社 燃焼式動力工具
JP4380395B2 (ja) * 2004-04-05 2009-12-09 日立工機株式会社 燃焼式動力工具
JP4353110B2 (ja) * 2004-04-19 2009-10-28 日立工機株式会社 燃焼式釘打機
JP4608974B2 (ja) * 2004-07-09 2011-01-12 日立工機株式会社 燃焼式釘打機

Also Published As

Publication number Publication date
EP2070657A3 (de) 2010-06-02
RU2295435C2 (ru) 2007-03-20
TWI279296B (en) 2007-04-21
JP2005329533A (ja) 2005-12-02
US20050229598A1 (en) 2005-10-20
US7500587B2 (en) 2009-03-10
CA2503226C (en) 2007-06-05
JP4353110B2 (ja) 2009-10-28
EP1588804A2 (de) 2005-10-26
TW200603961A (en) 2006-02-01
RU2005112156A (ru) 2006-10-27
DE602005013597D1 (de) 2009-05-14
EP2070657A2 (de) 2009-06-17
AU2005201643A1 (en) 2005-11-03
AU2005201643B2 (en) 2011-03-03
US20070034661A1 (en) 2007-02-15
EP1588804A3 (de) 2006-07-12
CA2503226A1 (en) 2005-10-19
US7121442B2 (en) 2006-10-17

Similar Documents

Publication Publication Date Title
EP1588804B1 (de) Verbrennungskraftbetriebenes Werkzeug
US7316209B2 (en) Combustion type power tool having buffer piece
EP2061631B1 (de) Brennkraftbetriebenes elektrowerkzeug
US7305941B2 (en) Combustion type power tool having motor suspension arrangement
US7484481B2 (en) Combustion-type power tool having switch protection arrangement
US7182237B2 (en) Combustion type power tool having segmental connection unit
US7387092B2 (en) Combustion-type power tool having cooling arrangement
EP1693158A2 (de) Verbrennungskraftbetriebenes Werkzeug mit Zündungsschützanordnung
EP1693157B1 (de) Verbrennungskraftbetriebenes Werkzeug mit Zündungsschützanordnung
AU2011202619B2 (en) Combustion-type power tool

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

17P Request for examination filed

Effective date: 20070111

AKX Designation fees paid

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20070330

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602005013597

Country of ref document: DE

Date of ref document: 20090514

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100105

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602005013597

Country of ref document: DE

Representative=s name: WEICKMANN & WEICKMANN PATENTANWAELTE - RECHTSA, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602005013597

Country of ref document: DE

Representative=s name: WEICKMANN & WEICKMANN PATENT- UND RECHTSANWAEL, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602005013597

Country of ref document: DE

Representative=s name: WEICKMANN & WEICKMANN PATENT- UND RECHTSANWAEL, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602005013597

Country of ref document: DE

Owner name: KOKI HOLDINGS CO., LTD., JP

Free format text: FORMER OWNER: HITACHI KOKI CO., LTD., TOKIO/TOKYO, JP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602005013597

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20181031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230420

Year of fee payment: 19

Ref country code: DE

Payment date: 20230420

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230419

Year of fee payment: 19